| Vendor | Spec | Unit | Price | Currency | Date |
| Shijiazhuang Baipo Chem | China national standards | MT | 341.49 | USD | 20251113 |
| Shijiazhuang Baipo Chem | China national standards | MT | 341.65 | USD | 20251112 |
| Shijiazhuang Baipo Chem | China national standards | MT | 338.67 | USD | 20251111 |
| Shijiazhuang Baipo Chem | China national standards | MT | 331.66 | USD | 20251110 |
| Shijiazhuang Baipo Chem | China national standards | MT | 313.4 | USD | 20251107 |
| Shijiazhuang Baipo Chem | China national standards | MT | 306.22 | USD | 20251106 |
| Shijiazhuang Baipo Chem | China national standards | MT | 304.65 | USD | 20251105 |
| Shijiazhuang Baipo Chem | China national standards | MT | 300.49 | USD | 20251104 |
| Shijiazhuang Baipo Chem | China national standards | MT | 300.56 | USD | 20251103 |
| Shijiazhuang Baipo Chem | China national standards | MT | 320.26 | USD | 20251031 |